his 1989 book, The End of Nature. In it, McKibben argued that humankind’s impact on the planet would require the same Malthusian program developed by Ehrlich and Commoner in the 1970s. Economic growth would have to end. Rich nations must return to farming and transfer wealth to poor nations so they could improve their lives modestly but not industrialize. And the human population would have to shrink to between 100 million and 2 billion.
